CVE-2018-19274

Name: CVE-2018-19274
Creator: NVD / NIST
Published: 2018-11-17T13:29:00.24+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.2/10EPSS 5.20%

Last modified Jun 17, 2026

CVE-2018-19274 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. Passing an absolute path to a file_exists check in phpBB before 3.2.4 allows Remote Code Execution through Object Injection by employing Phar deserialization when an attacker has access to the Admin Control Panel with founder permissions.. EPSS estimates a 5.20% chance of exploitation in the next 30 days.

Description

Passing an absolute path to a file_exists check in phpBB before 3.2.4 allows Remote Code Execution through Object Injection by employing Phar deserialization when an attacker has access to the Admin Control Panel with founder permissions.

Metrics

CVSS 3.1

7.2/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

5.20%

91.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Phpbb	Phpbb	< 3.2.4
Debian	Debian Linux	8.0

References

https://blog.ripstech.com/2018/phpbb3-phar-deserialization-to-remote-code-execution/Exploit, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/11/msg00029.htmlMailing List, Third Party Advisory
https://www.phpbb.com/community/viewtopic.php?f=14&t=2492206Patch, Vendor Advisory
https://blog.ripstech.com/2018/phpbb3-phar-deserialization-to-remote-code-execution/Exploit, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/11/msg00029.htmlMailing List, Third Party Advisory
https://www.phpbb.com/community/viewtopic.php?f=14&t=2492206Patch, Vendor Advisory

Timeline

Published: Nov 17, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-19274?

How severe is CVE-2018-19274?

CVE-2018-19274 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 5.20% probability of exploitation in the next 30 days.

How do I fix CVE-2018-19274?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-19274?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST